Mike created a shoe store named "Be like Mike Shoe Store." Mike offersa frequent-buyers card. Each transaction is worth 8 points, and customersautomatically earn 20 points when they sign up.a) Write an equation for the function that gives the card value based onthe number of transactions that have occurred.b) What is the y-intercept for this linear function, and what does itrepresent?c) What is the slope for this linear function, and what does it represent?d) For each 260 points, the customer receives a gift certificate. Howmany transactions will it take for the customer to earn the first giftcertificate?7